ASTROSAT CZTI

Data Quality Report

Orbit 35610

Creation date: 2022-04-30T04:24:51.977448
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_065T04_9000005098_35610cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35610cztM0_level2_quad_clean.evt
Size (bytes)436,098,24061,678,080
Size415.9 MB 58.8 MB
Events in quadrant A2,492,116395,376
Events in quadrant B3,049,617395,470
Events in quadrant C2,964,671378,250
Events in quadrant D4,362,865349,273

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103963
B0121462
C0116642
D0162472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497130.060350%
B49711653.319252%
C49711623.258902%
D497151610.380205%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7094 4972 0 0 0.00% 0.00%
B 7094 4972 118 118 1.66% 2.37%
C 7094 4972 120 120 1.69% 2.41%
D 7094 4972 438 438 6.17% 8.81%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 133192 1090.26 601 590 121.6
A 8 6 11621 90.7 601 590 121.6
A 13 6 9682 74.75 601 590 121.6
B 5 172 593181 5197.49 595 582 114.0
B 3 112 84060 732.16 595 582 114.0
B 10 245 15796 133.44 595 582 114.0
C 0 10 440450 3313.56 576 581 132.7
C 15 214 204251 1534.26 576 581 132.7
C 12 249 58633 437.31 576 581 132.7
D 7 80 1624476 11917.72 554 538 136.3
D 2 249 216490 1584.82 554 538 136.3
D 1 52 145390 1063.04 554 538 136.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter